• Korean Journal of Food Science and Technology
• /
• v.31 no.1
• /
• pp.153-157
• /
• 1999

Three varieties of soybean (Joonjul, Iksan and Eunha) were cultivated by a standard procedure and by the treatment of chitosan solution (1% chitosan in 0.25% acetic acid) for 5 days. In the chitosan treated soybean sprouts (CTSS), the growth rate and weight increase were higher than in the control group. The growth rate of CTSS (Iksan) was 25.4% higher and the increase of fresh weight of CTSS was 8.5% higher than those of control group. Dry weight of whole soybean sprout in the control group decreased during cultivation, but that of CTSS slightly increased after 2 days cultivation. In the control group, dry weight of hypocotyl increased 400%, but that of cotyledon decreased 41% during 5 days cultivation.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.48 no.3
• /
• pp.232-237
• /
• 2003

Benzyladenopuyine (BA) commonly used for soybean sprout production is of high price. The study was carried out to determine the effect of BA treatment time during seed imbibition on growth and development of soybean sprouts and to analyse its treatment cost. The soybean seeds of 4 cultivars were soaked in 4 ppm BA solution during the first 5.5 hour imbibition (EFHI), the second 5.5 hour imbibition (SFHI) immediately after 0.5 hour aeration, or whole 11.0 hour imbibition (WFHI) intervened by aeration. On the 6th day after culture, the soybean sprouts were classified into 4 categories on the base of hypocotyl length; ＞ 7cm, 4 to 7cm, ＜ 4 cm and not germinated, and their morphological characters, fresh and dry weights were measured. Water absorption of the seeds was sharply reduced after it was almost done for the first 5.5 hours. The percentage of sprouts with hypocotyls of longer than 4cm was higher in FFHI treatment than in the other two ones. Regardless of BA imbibition time and periods, the lateral roots were not observed. WFHI treatment showed shorter hypocotyl and root lengths but thicker hypocotyl and hook diameters than FFHI and SFHI treatments. All component fresh and dry weights except cotyledon fresh weight were nearly same. Treatment cost of BA was the lowest in SFHI treatment. It is concluded that BA treatment during SFHI is the best time because its treatment time did not affect sprout growth but its treatment cost.

• Korean Journal of Medicinal Crop Science
• /
• v.13 no.1
• /
• pp.6-10
• /
• 2005

Lateral roots of soybean sprouts should deeply affect their quality and marketability. The study was done to compare the effects of ocher, chitosan, corn kennel, tea (Thea sinensis L.) and hard rubber tree (Eucommia ulmoides Oliver) leaf extracts on lateral root formation, growth and morphological characters of the sprouts. Seeds of three cultivars, Pungsannamulkong, Sowonkong and Junjery, were imbibed for 5 hours into their 10% solutions and cultured for 6 days. The cultured sprouts were classified into 4 categories to calculate their composition rates on the base of hypocotyl lengths;>7 cm (A), 4 to 7 cm (B), < 4 cm (C) and not germinated (D), and their morphological characters, fresh and dry weights were measured. Composition rate of A was the lowest in Junjery of the three cultivars, while that of C showed reverse result compared to A. This results was the most distinct in hard rubber tree leaf extracts (HRTLE) of the five treatments. In HRTLE treatment, lateral root formation rate were formed in almost of Sowonkong although reduced in order of Pungsannamulkong and Junjery. However, there was no significant difference between the other treatments. Lateral roots per sprout were the lowest in HRTLE treatment of the 5 treatments. In all treatments except the chitosan treatment, the roots were most formed in Sowonkong but least in Junjery. Sprout length adding hypocotyl and root was the shortest in Junjery compared to the other two cultivars. and was the longest in tea leaf extract treatment but the shortest in HRTLE treatment. The result in total fresh weight of sprouts was similar to that of the sprout length.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.42 no.3
• /
• pp.323-332
• /
• 1997

Drainage is needed to run off excessive water stress during the rainy season for soybean cultivation in the converted upland from paddy field. This study was conducted to evaluate the effect of planting dates and drainage methods on growth and yield of sprout soybeans in the converted upland from paddy field. The stem and root growth at flowering stage showed no difference by drainage method but plant height, number of nodes and branches, and fresh weight of stem and root were much greater as planting date delayed. Seed yield was correlated positively with fresh weight of stem and root, and T/R ratio at the flowering stage, respectively. Lodging degree was not different by drainage method but was higher in planting at June 16 than May 15. Number of pods and 100 seed weight were not different by drainage method and 100 seed weight was heavy in Eunhakong, light in Kwangankong as planting date delayed. Higher seed yield was observed in surface drainage than open ditched drainage. Yield performance of Eunhakong was good in late planting, while that of Kwangankong was in early planting.

• Culinary science and hospitality research
• /
• v.9 no.4
• /
• pp.113-122
• /
• 2003

This study was conducted to examine the antagonism of useful microbes against soybean sprout rotting pathogens and their effect on the growth of soybean sprouts. The antagonism against soybean sprout rotting pathogens and the effect on the growth of soybean sprouts were examined by using P. areofacience 14H-3, P. fluorescens R1-12 and B. cereus Yell, bacteria were shown to inhibit mycellial growth of Rhizotonia solani strongly. The results of this study are summarized as follows. P. areofacience 14H-3 and B. cereus Yell were highly antagonistic against Rizoctonia solani, while they were especially highly antagonistic against bacterial diseases. The effect of inhibiting the proliferation of soybean sprout rotting pathogens was also examined by adding the culture solution for antagonistic bacteria to the PDA. Both P. areofacience 14H-3 and P. fluorescens Rl-12 showed the inhibition rate of 78.8%, while B. cereus Yell did 52.9%. The fresh weight and length of soybean sprouts were measured after raising them with added antagonistic microbes and culture medium. Soybean sprouts treated with B. cereus Yell showed increased higher, compared with those not treated with it. Soybean sprouts were also raised in the culture solution with antagonistic bacteria to examine the growth of soybean sprouts. Soybean sprouts treated with the culture solution of 200 times showed better growth than those not treated with it. Analyze proximate composition in soybean sprout showed that moisture, ash, total sugar did not appear difference, but in case of crude protein B. cereus Yell(8.9%) increased about 2 times than control(3.6%), but occasion of crude fat and crude fiber were P. areofacience 14H-3, P. fluorescens Rl-12 increased about each 2 times than control. In occasion of vitamin, bacterial antagonist(9.4∼10.8mg%) was more higher than control(9.9mg%).

• Journal of Bio-Environment Control
• /
• v.16 no.4
• /
• pp.415-419
• /
• 2007

This study was conducted to compare the storability of some sprout vegetables; alfalfa, broccoli, radish, red-cabbage, and red-radish, packed with 50 low density polyethylene (LDPE) film in MA storage. Most of all 5 different sprout vegetable crops maintained the fresh weight higher than 99% until 10 days storage at 2 and $8^{\circ}C$. The carbon dioxide concentration in packages was higher at 8 than at $2^{\circ}C$. It was higher in radish and red-radish sprouts than other crops. As the oxygen concentration showed opposite trends to carbon dioxide, that of radish and red-radish sprouts decreased more than 3% after 3 days in 8 storage. Ethylene concentration in the packages of alfalfa was 0.1 ppm, significantly higher than other four crops with less than 1.0 ppm. Temperature treatment, however, did not influence the ethylene concentration in packages. The radish and red-radish sprouts, with lowest oxygen concentration in package, showed lowest off-flavor compared to the others. The visual quality of these sprouts in packages showed higher at $2^{\circ}C\;than\;at\;8^{\circ}C$ and was maintained the highest in radish sprouts, followed by red-radish, broccoli, red-cabbage, and alfalfa sprouts in that order. In conclusion, as the sprout vegetables have different shelf-life, of which radish was $4{\sim}5$ days longer than that of alfalfa the distributed condition of sprout vegetables should be differently controlled according to kinds of crops.

• Korean Journal of Plant Resources
• /
• v.20 no.2
• /
• pp.145-149
• /
• 2007

Shape of soybean sprouts affects their marketability. This study was carried out to understand the effects of pressure in both overspraying and underwatering cultivation methods on growth and morphological characteristics of soybean sprouts. Pressing treatments were done by continuous pressing by laying a plastic culture box over another with growing the sprouts, their alteration every day, or no pressing in overspraying method, and by continuous pressing, pressing after the 4th day cultivation with 30 kg steel case, or no pressing in underwatering method. The soybean (cv. Junjery) seeds were soaked in 2 ppm BA solution for 5 hours and then aerated for 3 hours immediately before 6 day culture. Lateral roots, hypocotyl and root lengths, hypocotyl diameters, fresh and dry weights were measured. Lateral roots per sprout were decreased with stronger pressing regardless of watering methods. In overspraying method, continuous pressing treatment resulted in shortest hypocotyl, but no and ones did the longest root. In underwatering method, however, no pressing one showed the longest hypocotyl but continuous pressing did the shortest hypocotyl. Regardless of watering methods, middle part of hypocotyl was more thickened with stronger pressing although hook diameters of the 3 treatments were not affected. In overspraying method. total fresh weight per sprout was the least in no pressing but the greatest in continuous pressing. In underwatering method, however, there was no significant difference between the treatments.

• Korean Journal of Plant Resources
• /
• v.19 no.2
• /
• pp.204-208
• /
• 2006

Soybean sprout decay during its culture should be one of serious problems. The study was carried out to clarify the effect of water imbibition and acetic acid treatments on growth and morphological characters of the soybean sprouts. The soybean seeds of 3 cultivars (cv. Eunhakong, Pungsannamulkong and Junjery) imbibed in pure water or 0.l% acetic acid for 3 minutes before soaked for 6 hours into 1 ppm BA solution and aerated for 3 hours immediately before 6 day culture. On the 6th day, the sprouts were classified into 4 categories on the base of hypocotyl length; > 7cm, 4 to 7cm, > 4cm and not germinated and seed floating rate, their morphological characters, fresh fraction weights and productivity were measured. The best water imbibition for seed cleaning was to soak the seeds for 5 minutes and then to aerate soak them for 40 minutes. In Pungsannamulkong and Junjery, percentage of the sprouts with hypocotyls of longer than 4 cm was higher in water imbibition than in acetic acid treatment for seed disinfection although in Eunhakong there was no significant difference between the two treatments. Eunhakong and Junjery had greater lateral root formation rate and its number per sprout in water imbibition than in acetic acid treatment but Pungsannamulkong showed reverse result. Eunhakong and Pungsannamulkong, furthermore, had more total fresh weight in acetic acid treatment than in water imbibition but Junjery showed reverse result, although there was no significant difference between the two treatments in productivity of mass production system.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.49 no.6
• /
• pp.487-490
• /
• 2004

Methods for culturing bean sprouts could be divided into two main groups of overspraying and underwatering according to water supplying. The study was done to measure the effect of water supplying method on growth of mungbean sprouts and temperatures inside their culture boxes. The morphological characters, fresh and dry weights were measured on the 6th day after culturing, but temperatures of the boxes were recorded daily by dataloggers. Lateral roots was not formed in the under-watering method (UM) while partially done in the over-spraying method (OM). OM had longer hypocotyl but UM had longer root compared to the other. Two water supplying methods, however, had nearly similar total length adding hypocotyl and root lengths, diameters of middle and upper parts of hypocotyl. OM showed more total fresh weight than UM mainly resulting from increment of hypocotyl fresh weight. The fresh weight increment in OM was caused by relatively higher temperature of culture box compared to UM.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.42 no.3
• /
• pp.317-322
• /
• 1997

In order to investigate vigor of rice seed pregerminated, some organic and inorganic component content, response of ecotypes, and effect of gibberellin treatment, under different levels of hastening of germination, were examined. Protein content was high in dried seed, the larger size in length of pregerminated seed, the less protein content, but lipid content was a reverse tendency to protein one. Potassium content was low in dried seed, the larger size in length of pregerminated seed, the more potassium content, but increase dramatically at above 10 mm in length of sprout. Magnesium content showed a same tendency to potassium one. The ability of regermination was high in early maturing cultivar, but almost lost in the pregerminated seeds with above 5 mm in length of sprout. The regermination percentage of dried seed was lower than that of pregerminated seed with 0.1∼0.5 mm in length, but was similar to that of pregerminated one with 1∼3 mm in length of sprout. The effect of gibberellin on regermination percentage was highest at 10 ppm and showed high with small sized one of pregerminated seed. The effect of gibberellin on plant height, fresh weight, and dry weight showed a same tendency to regermination percentage.